LANDLORD KNOWLEDGE
Improving an EPC from E to C
An E-rated property merits a whole-property review, a realistic budget and careful sequencing.
Understand the starting point
On the current EER scale, E is 39–54. Reaching the current C threshold of 69 therefore means a 15–30 point gap. This is a planning comparison, not a forecast of achievable improvement.
Investigate the reasons behind the rating
Check fuel and heating first alongside the envelope of the building. Look for assumed construction, missing insulation evidence, poorly described extensions and the treatment of converted roof rooms. Record what has changed since the certificate was issued.
Plan around dependencies
Wall and roof insulation need compatible ventilation and moisture details. A heating replacement needs the property's heat demand and emitters considered. An electrical upgrade may need space, supply checks and a suitable installation route. None of these decisions should be made from the letter E alone.
Budget the whole job
Ask the quotation to include access, making good, necessary electrical or plumbing work, professional assessment and permissions. Separate essential repair from energy measures. Ask which costs and evidence may be relevant to an exemption review, using the official policy sources.
Prepare for the consultation
Have the certificate, floor plan if available, photographs of relevant areas and evidence of existing work ready. Include tenancy access restrictions. The team can then compare a staged programme with work during a vacant period.
GOV.UK: inspect your certificate · Energy Saving Trust: whole-house retrofit